/**
 * Interface Elements for jQuery
 * Draggable
 *
 * http://interface.eyecon.ro
 *
 * Copyright (c) 2006 Stefan Petre
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 */
 
/**
 * Create a draggable element with a number of advanced options including callback, Google Maps type draggables,
 * reversion, ghosting, and grid dragging.
 * 
 * @name Draggable
 * @descr Creates draggable elements that can be moved across the page.
 * @param Hash hash A hash of parameters. All parameters are optional.
 * @option String handle (optional) The jQuery selector matching the handle that starts the draggable
 * @option DOMElement handle (optional) The DOM Element of the handle that starts the draggable
 * @option Boolean revert (optional) When true, on stop-drag the element returns to initial position
 * @option Boolean ghosting (optional) When true, a copy of the element is moved
 * @option Integer zIndex (optional) zIndex depth for the element while it is being dragged
 * @option Float opacity (optional) A number between 0 and 1 that indicates the opacity of the element while being dragged
 * @option Integer grid (optional) (optional) A number of pixels indicating the grid that the element should snap to
 * @option Array grid (optional) A number of x-pixels and y-pixels indicating the grid that the element should snap to
 * @option Integer fx (optional) Duration for the effect (like ghosting or revert) applied to the draggable
 * @option String containment (optional) Define the zone where the draggable can be moved. 'parent' moves it inside parent
 *                           element, while 'document' prevents it from leaving the document and forcing additional
 *                           scrolling
 * @option Array containment An 4-element array (left, top, width, height) indicating the containment of the element
 * @option String axis (optional) Set an axis: vertical (with 'vertically') or horizontal (with 'horizontally')
 * @option Function onStart (optional) Callback function triggered when the dragging starts
 * @option Function onStop (optional) Callback function triggered when the dragging stops
 * @option Function onChange (optional) Callback function triggered when the dragging stop *and* the element was moved at least
 *                          one pixel
 * @option Function onDrag (optional) Callback function triggered while the element is dragged. Receives two parameters: x and y
 *                        coordinates. You can return an object with new coordinates {x: x, y: y} so this way you can
 *                        interact with the dragging process (for instance, build your containment)
 * @option Boolean insideParent Forces the element to remain inside its parent when being dragged (like Google Maps)
 * @option Integer snapDistance (optional) The element is not moved unless it is dragged more than snapDistance. You can prevent
 *                             accidental dragging and keep regular clicking enabled (for links or form elements, 
 *                             for instance)
 * @option Object cursorAt (optional) The dragged element is moved to the cursor position with the offset specified. Accepts value
 *                        for top, left, right and bottom offset. Basically, this forces the cursor to a particular
 *                        position during the entire drag operation.
 * @option Boolean autoSize (optional) When true, the drag helper is resized to its content, instead of the dragged element's sizes
 * @option String frameClass (optional) When is set the cloned element is hidden so only a frame is dragged
 * @type jQuery
 * @cat Plugins/Interface
 * @author Stefan Petre
 */

jQuery.iDrag =  {
    helper : null,
    dragged: null,
    destroy : function()
    {
        return this.each(
            function ()
            {
                if (this.isDraggable) {
                    this.dragCfg.dhe.unbind('mousedown', jQuery.iDrag.draginit);
                    this.dragCfg = null;
                    this.isDraggable = false;
                    if(jQuery.browser.msie) {
                        this.unselectable = "off";
                    } else {
                        this.style.MozUserSelect = '';
                        this.style.KhtmlUserSelect = '';
                        this.style.userSelect = '';
                    }
                }
            }
        );
    },
    draginit : function (e)
    {
        if (jQuery.iDrag.dragged != null) {
            jQuery.iDrag.dragstop(e);
            return false;
        }
        var elm = this.dragElem;
        jQuery(document)
            .bind('mousemove', jQuery.iDrag.dragmove)
            .bind('mouseup', jQuery.iDrag.dragstop);
        elm.dragCfg.pointer = jQuery.iUtil.getPointer(e);
        elm.dragCfg.currentPointer = elm.dragCfg.pointer;
        elm.dragCfg.init = false;
        elm.dragCfg.fromHandler = this != this.dragElem;
        jQuery.iDrag.dragged = elm;
        if (elm.dragCfg.si && this != this.dragElem) {
                parentPos = jQuery.iUtil.getPosition(elm.parentNode);
                sliderSize = jQuery.iUtil.getSize(elm);
                sliderPos = {
                    x : parseInt(jQuery.css(elm,'left')) || 0,
                    y : parseInt(jQuery.css(elm,'top')) || 0
                };
                dx = elm.dragCfg.currentPointer.x - parentPos.x - sliderSize.wb/2 - sliderPos.x;
                dy = elm.dragCfg.currentPointer.y - parentPos.y - sliderSize.hb/2 - sliderPos.y;
                jQuery.iSlider.dragmoveBy(elm, [dx, dy]);
        }
        return jQuery.selectKeyHelper||false;
    },

    dragstart : function(e)
    {
        var elm = jQuery.iDrag.dragged;
        elm.dragCfg.init = true;

        var dEs = elm.style;

        elm.dragCfg.oD = jQuery.css(elm,'display');
        elm.dragCfg.oP = jQuery.css(elm,'position');
        if (!elm.dragCfg.initialPosition)
            elm.dragCfg.initialPosition = elm.dragCfg.oP;

        elm.dragCfg.oR = {
            x : parseInt(jQuery.css(elm,'left')) || 0,
            y : parseInt(jQuery.css(elm,'top')) || 0
        };
        elm.dragCfg.diffX = 0;
        elm.dragCfg.diffY = 0;
        if (jQuery.browser.msie) {
            var oldBorder = jQuery.iUtil.getBorder(elm, true);
            elm.dragCfg.diffX = oldBorder.l||0;
            elm.dragCfg.diffY = oldBorder.t||0;
        }

        elm.dragCfg.oC = jQuery.extend(
            jQuery.iUtil.getPosition(elm),
            jQuery.iUtil.getSize(elm)
        );
        if (elm.dragCfg.oP != 'relative' && elm.dragCfg.oP != 'absolute') {
            dEs.position = 'relative';
        }

        jQuery.iDrag.helper.empty();
        var clonedEl = elm.cloneNode(true);
        
        jQuery(clonedEl).css(
            {
                display:    'block',
                left:       '0px',
                top:        '0px'
            }
        );
        clonedEl.style.marginTop = '0';
        clonedEl.style.marginRight = '0';
        clonedEl.style.marginBottom = '0';
        clonedEl.style.marginLeft = '0';
        jQuery.iDrag.helper.append(clonedEl);
        
        var dhs = jQuery.iDrag.helper.get(0).style;

        if (elm.dragCfg.autoSize) {
            dhs.width = 'auto';
            dhs.height = 'auto';
        } else {
            dhs.height = elm.dragCfg.oC.hb + 'px';
            dhs.width = elm.dragCfg.oC.wb + 'px';
        }

        dhs.display = 'block';
        dhs.marginTop = '0px';
        dhs.marginRight = '0px';
        dhs.marginBottom = '0px';
        dhs.marginLeft = '0px';

        //remeasure the clone to check if the size was changed by user's functions
        jQuery.extend(
            elm.dragCfg.oC,
            jQuery.iUtil.getSize(clonedEl)
        );

        if (elm.dragCfg.cursorAt) {
            if (elm.dragCfg.cursorAt.left) {
                elm.dragCfg.oR.x += elm.dragCfg.pointer.x - elm.dragCfg.oC.x - elm.dragCfg.cursorAt.left;
                elm.dragCfg.oC.x = elm.dragCfg.pointer.x - elm.dragCfg.cursorAt.left;
            }
            if (elm.dragCfg.cursorAt.top) {
                elm.dragCfg.oR.y += elm.dragCfg.pointer.y - elm.dragCfg.oC.y - elm.dragCfg.cursorAt.top;
                elm.dragCfg.oC.y = elm.dragCfg.pointer.y - elm.dragCfg.cursorAt.top;
            }
            if (elm.dragCfg.cursorAt.right) {
                elm.dragCfg.oR.x += elm.dragCfg.pointer.x - elm.dragCfg.oC.x -elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.right;
                elm.dragCfg.oC.x = elm.dragCfg.pointer.x - elm.dragCfg.oC.wb + elm.dragCfg.cursorAt.right;
            }
            if (elm.dragCfg.cursorAt.bottom) {
                elm.dragCfg.oR.y += elm.dragCfg.pointer.y - elm.dragCfg.oC.y - elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.bottom;
                elm.dragCfg.oC.y = elm.dragCfg.pointer.y - elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.bottom;
            }
        }
        elm.dragCfg.nx = elm.dragCfg.oR.x;
        elm.dragCfg.ny = elm.dragCfg.oR.y;

        if (elm.dragCfg.insideParent || elm.dragCfg.containment == 'parent') {
            parentBorders = jQuery.iUtil.getBorder(elm.parentNode, true);
            elm.dragCfg.oC.x = elm.offsetLeft + (jQuery.browser.msie ? 0 : jQuery.browser.opera ? -parentBorders.l : parentBorders.l);
            elm.dragCfg.oC.y = elm.offsetTop + (jQuery.browser.msie ? 0 : jQuery.browser.opera ? -parentBorders.t : parentBorders.t);
            jQuery(elm.parentNode).append(jQuery.iDrag.helper.get(0));
        }
        if (elm.dragCfg.containment) {
            jQuery.iDrag.getContainment(elm);
            elm.dragCfg.onDragModifier.containment = jQuery.iDrag.fitToContainer;
        }

        if (elm.dragCfg.si) {
            jQuery.iSlider.modifyContainer(elm);
        }

        dhs.left = elm.dragCfg.oC.x - elm.dragCfg.diffX + 'px';
        dhs.top = elm.dragCfg.oC.y - elm.dragCfg.diffY + 'px';
        //resize the helper to fit the clone
        dhs.width = elm.dragCfg.oC.wb + 'px';
        dhs.height = elm.dragCfg.oC.hb + 'px';

        jQuery.iDrag.dragged.dragCfg.prot = false;

        if (elm.dragCfg.gx) {
            elm.dragCfg.onDragModifier.grid = jQuery.iDrag.snapToGrid;
        }
        if (elm.dragCfg.zIndex != false) {
            jQuery.iDrag.helper.css('zIndex', elm.dragCfg.zIndex);
        }
        if (elm.dragCfg.opacity) {
            jQuery.iDrag.helper.css('opacity', elm.dragCfg.opacity);
            if (window.ActiveXObject) {
                jQuery.iDrag.helper.css('filter', 'alpha(opacity=' + elm.dragCfg.opacity * 100 + ')');
            }
        }

        if(elm.dragCfg.frameClass) {
            jQuery.iDrag.helper.addClass(elm.dragCfg.frameClass);
            jQuery.iDrag.helper.get(0).firstChild.style.display = 'none';
        }
        if (elm.dragCfg.onStart)
            elm.dragCfg.onStart.apply(elm, [clonedEl, elm.dragCfg.oR.x, elm.dragCfg.oR.y]);
        if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
            jQuery.iDrop.highlight(elm);
        }
        if (elm.dragCfg.ghosting == false) {
            dEs.display = 'none';
        }
        return false;
    },

    getContainment : function(elm)
    {
        if (elm.dragCfg.containment.constructor == String) {
            if (elm.dragCfg.containment == 'parent') {
                elm.dragCfg.cont = jQuery.extend(
                    {x:0,y:0},
                    jQuery.iUtil.getSize(elm.parentNode)
                );
                var contBorders = jQuery.iUtil.getBorder(elm.parentNode, true);
                elm.dragCfg.cont.w = elm.dragCfg.cont.wb - contBorders.l - contBorders.r;
                elm.dragCfg.cont.h = elm.dragCfg.cont.hb - contBorders.t - contBorders.b;
            } else if (elm.dragCfg.containment == 'document') {
                var clnt = jQuery.iUtil.getClient();
                elm.dragCfg.cont = {
                    x : 0,
                    y : 0,
                    w : clnt.w,
                    h : clnt.h
                };
            }
        } else if (elm.dragCfg.containment.constructor == Array) {
            elm.dragCfg.cont = {
                x : parseInt(elm.dragCfg.containment[0])||0,
                y : parseInt(elm.dragCfg.containment[1])||0,
                w : parseInt(elm.dragCfg.containment[2])||0,
                h : parseInt(elm.dragCfg.containment[3])||0
            };
        }
        elm.dragCfg.cont.dx = elm.dragCfg.cont.x - elm.dragCfg.oC.x;
        elm.dragCfg.cont.dy = elm.dragCfg.cont.y - elm.dragCfg.oC.y;
    },

    hidehelper : function(dragged)
    {
        if (dragged.dragCfg.insideParent || dragged.dragCfg.containment == 'parent') {
            jQuery('body', document).append(jQuery.iDrag.helper.get(0));
        }
        jQuery.iDrag.helper.empty().hide().css('opacity', 1);
        if (window.ActiveXObject) {
            jQuery.iDrag.helper.css('filter', 'alpha(opacity=100)');
        }
    },

    dragstop : function(e)
    {

        jQuery(document)
            .unbind('mousemove', jQuery.iDrag.dragmove)
            .unbind('mouseup', jQuery.iDrag.dragstop);

        if (jQuery.iDrag.dragged == null) {
            return;
        }
        var dragged = jQuery.iDrag.dragged;

        jQuery.iDrag.dragged = null;

        if (dragged.dragCfg.init == false) {
            return false;
        }
        if (dragged.dragCfg.so == true) {
            jQuery(dragged).css('position', dragged.dragCfg.oP);
        }
        var dEs = dragged.style;

        if (dragged.si) {
            jQuery.iDrag.helper.css('cursor', 'move');
        }
        if(dragged.dragCfg.frameClass) {
            jQuery.iDrag.helper.removeClass(dragged.dragCfg.frameClass);
        }

        if (dragged.dragCfg.revert == false) {
            if (dragged.dragCfg.fx > 0) {
                if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally') {
                    var x = new jQuery.fx(dragged,{duration:dragged.dragCfg.fx}, 'left');
                    x.custom(dragged.dragCfg.oR.x,dragged.dragCfg.nRx);
                }
                if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically') {
                    var y = new jQuery.fx(dragged,{duration:dragged.dragCfg.fx}, 'top');
                    y.custom(dragged.dragCfg.oR.y,dragged.dragCfg.nRy);
                }
            } else {
                if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally')
                    dragged.style.left = dragged.dragCfg.nRx + 'px';
                if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically')
                    dragged.style.top = dragged.dragCfg.nRy + 'px';
            }
            jQuery.iDrag.hidehelper(dragged);
            if (dragged.dragCfg.ghosting == false) {
                jQuery(dragged).css('display', dragged.dragCfg.oD);
            }
        } else if (dragged.dragCfg.fx > 0) {
            dragged.dragCfg.prot = true;
            var dh = false;
            if(jQuery.iDrop && jQuery.iSort && dragged.dragCfg.so) {
                dh = jQuery.iUtil.getPosition(jQuery.iSort.helper.get(0));
            }
            jQuery.iDrag.helper.animate(
                {
                    left : dh ? dh.x : dragged.dragCfg.oC.x,
                    top : dh ? dh.y : dragged.dragCfg.oC.y
                },
                dragged.dragCfg.fx,
                function()
                {
                    dragged.dragCfg.prot = false;
                    if (dragged.dragCfg.ghosting == false) {
                        dragged.style.display = dragged.dragCfg.oD;
                    }
                    jQuery.iDrag.hidehelper(dragged);
                }
            );
        } else {
            jQuery.iDrag.hidehelper(dragged);
            if (dragged.dragCfg.ghosting == false) {
                jQuery(dragged).css('display', dragged.dragCfg.oD);
            }
        }

        if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
            jQuery.iDrop.checkdrop(dragged);
        }
        if (jQuery.iSort && dragged.dragCfg.so) {
            jQuery.iSort.check(dragged);
        }
        if (dragged.dragCfg.onChange && (dragged.dragCfg.nRx != dragged.dragCfg.oR.x || dragged.dragCfg.nRy != dragged.dragCfg.oR.y)){
            dragged.dragCfg.onChange.apply(dragged, dragged.dragCfg.lastSi||[0,0,dragged.dragCfg.nRx,dragged.dragCfg.nRy]);
        }
        if (dragged.dragCfg.onStop)
            dragged.dragCfg.onStop.apply(dragged);
        return false;
    },

    snapToGrid : function(x, y, dx, dy)
    {
        if (dx != 0)
            dx = parseInt((dx + (this.dragCfg.gx * dx/Math.abs(dx))/2)/this.dragCfg.gx) * this.dragCfg.gx;
        if (dy != 0)
            dy = parseInt((dy + (this.dragCfg.gy * dy/Math.abs(dy))/2)/this.dragCfg.gy) * this.dragCfg.gy;
        return {
            dx : dx,
            dy : dy,
            x: 0,
            y: 0
        };
    },

    fitToContainer : function(x, y, dx, dy)
    {
        dx = Math.min(
                Math.max(dx,this.dragCfg.cont.dx),
                this.dragCfg.cont.w + this.dragCfg.cont.dx - this.dragCfg.oC.wb
            );
        dy = Math.min(
                Math.max(dy,this.dragCfg.cont.dy),
                this.dragCfg.cont.h + this.dragCfg.cont.dy - this.dragCfg.oC.hb
            );

        return {
            dx : dx,
            dy : dy,
            x: 0,
            y: 0
        }
    },

    dragmove : function(e)
    {
        if (jQuery.iDrag.dragged == null || jQuery.iDrag.dragged.dragCfg.prot == true) {
            return;
        }

        var dragged = jQuery.iDrag.dragged;

        dragged.dragCfg.currentPointer = jQuery.iUtil.getPointer(e);
        if (dragged.dragCfg.init == false) {
            distance = Math.sqrt(Math.pow(dragged.dragCfg.pointer.x - dragged.dragCfg.currentPointer.x, 2) + Math.pow(dragged.dragCfg.pointer.y - dragged.dragCfg.currentPointer.y, 2));
            if (distance < dragged.dragCfg.snapDistance){
                return;
            } else {
                jQuery.iDrag.dragstart(e);
            }
        }

        var dx = dragged.dragCfg.currentPointer.x - dragged.dragCfg.pointer.x;
        var dy = dragged.dragCfg.currentPointer.y - dragged.dragCfg.pointer.y;

        for (var i in dragged.dragCfg.onDragModifier) {
            var newCoords = dragged.dragCfg.onDragModifier[i].apply(dragged, [dragged.dragCfg.oR.x + dx, dragged.dragCfg.oR.y + dy, dx, dy]);
            if (newCoords && newCoords.constructor == Object) {
                dx = i != 'user' ? newCoords.dx : (newCoords.x - dragged.dragCfg.oR.x);
                dy = i != 'user' ? newCoords.dy : (newCoords.y - dragged.dragCfg.oR.y);
            }
        }

        dragged.dragCfg.nx = dragged.dragCfg.oC.x + dx - dragged.dragCfg.diffX;
        dragged.dragCfg.ny = dragged.dragCfg.oC.y + dy - dragged.dragCfg.diffY;

        if (dragged.dragCfg.si && (dragged.dragCfg.onSlide || dragged.dragCfg.onChange)) {
            jQuery.iSlider.onSlide(dragged, dragged.dragCfg.nx, dragged.dragCfg.ny);
        }

        if(dragged.dragCfg.onDrag)
            dragged.dragCfg.onDrag.apply(dragged, [dragged.dragCfg.oR.x + dx, dragged.dragCfg.oR.y + dy]);
            
        if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally') {
            dragged.dragCfg.nRx = dragged.dragCfg.oR.x + dx;
            jQuery.iDrag.helper.get(0).style.left = dragged.dragCfg.nx + 'px';
        }
        if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically') {
            dragged.dragCfg.nRy = dragged.dragCfg.oR.y + dy;
            jQuery.iDrag.helper.get(0).style.top = dragged.dragCfg.ny + 'px';
        }
        
        if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
            jQuery.iDrop.checkhover(dragged);
        }
        return false;
    },

    build : function(o)
    {
        if (!jQuery.iDrag.helper) {
            jQuery('body ',document).append('<div id="dragHelper"></div>');
            jQuery.iDrag.helper = jQuery('#dragHelper');
            var el = jQuery.iDrag.helper.get(0);
            var els = el.style;
            els.position = 'absolute';
            els.display = 'none';
            els.cursor = 'move';
            els.listStyle = 'none';
            els.overflow = '';
            if (window.ActiveXObject) {
                el.unselectable = "on";
            } else {
                els.mozUserSelect = 'none';
                els.userSelect = 'none';
                els.KhtmlUserSelect = 'none';
            }
        }
        if (!o) {
            o = {};
        }
        return this.each(
            function()
            {
                if (this.isDraggable || !jQuery.iUtil)
                    return;
                if (window.ActiveXObject) {
                    this.onselectstart = function(){return false;};
                    this.ondragstart = function(){return false;};
                }
                var el = this;
                var dhe = o.handle ? jQuery(this).find(o.handle) : jQuery(this);
                if(jQuery.browser.msie) {
                    dhe.each(
                        function()
                        {
                            this.unselectable = "on";
                        }
                    );
                } else {
                    dhe.css('-moz-user-select', 'none');
                    dhe.css('user-select', 'none');
                    dhe.css('-khtml-user-select', 'none');
                }
                this.dragCfg = {
                    dhe: dhe,
                    revert : o.revert ? true : false,
                    ghosting : o.ghosting ? true : false,
                    so : o.so ? o.so : false,
                    si : o.si ? o.si : false,
                    insideParent : o.insideParent ? o.insideParent : false,
                    zIndex : o.zIndex ? parseInt(o.zIndex)||0 : false,
                    opacity : o.opacity ? parseFloat(o.opacity) : false,
                    fx : parseInt(o.fx)||null,
                    hpc : o.hpc ? o.hpc : false,
                    onDragModifier : {},
                    pointer : {},
                    onStart : o.onStart && o.onStart.constructor == Function ? o.onStart : false,
                    onStop : o.onStop && o.onStop.constructor == Function ? o.onStop : false,
                    onChange : o.onChange && o.onChange.constructor == Function ? o.onChange : false,
                    axis : /vertically|horizontally/.test(o.axis) ? o.axis : false,
                    snapDistance : o.snapDistance ? parseInt(o.snapDistance)||0 : 0,
                    cursorAt: o.cursorAt ? o.cursorAt : false,
                    autoSize : o.autoSize ? true : false,
                    frameClass : o.frameClass || false
                    
                };
                if (o.onDragModifier && o.onDragModifier.constructor == Function)
                    this.dragCfg.onDragModifier.user = o.onDragModifier;
                if (o.onDrag && o.onDrag.constructor == Function)
                    this.dragCfg.onDrag = o.onDrag;
                if (o.containment && ((o.containment.constructor == String && (o.containment == 'parent' || o.containment == 'document')) || (o.containment.constructor == Array && o.containment.length == 4) )) {
                    this.dragCfg.containment = o.containment;
                }
                if(o.fractions) {
                    this.dragCfg.fractions = o.fractions;
                }
                if(o.grid){
                    if(typeof o.grid == 'number'){
                        this.dragCfg.gx = parseInt(o.grid)||1;
                        this.dragCfg.gy = parseInt(o.grid)||1;
                    } else if (o.grid.length == 2) {
                        this.dragCfg.gx = parseInt(o.grid[0])||1;
                        this.dragCfg.gy = parseInt(o.grid[1])||1;
                    }
                }
                if (o.onSlide && o.onSlide.constructor == Function) {
                    this.dragCfg.onSlide = o.onSlide;
                }

                this.isDraggable = true;
                dhe.each(
                    function(){
                        this.dragElem = el;
                    }
                );
                dhe.bind('mousedown', jQuery.iDrag.draginit);
            }
        )
    }
};

/**
 * Destroy an existing draggable on a collection of elements
 * 
 * @name DraggableDestroy
 * @descr Destroy a draggable
 * @type jQuery
 * @cat Plugins/Interface
 * @example $('#drag2').DraggableDestroy();
 */

jQuery.fn.extend(
    {
        DraggableDestroy : jQuery.iDrag.destroy,
        Draggable : jQuery.iDrag.build
    }
);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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